Rotary clamping mechanism for bag packaging machines

Abstract

This utility model discloses a rotary clamping mechanism for a bag packaging machine, including a rotary table with a gripper assembly arranged circumferentially on the rotary table. The gripper assembly comprises a first swing block and a second swing block, with a swing drive assembly and an elastic reset member corresponding to the second swing block. The first swing block has a first transmission tooth, and the second swing block has a second transmission tooth meshing with the first transmission tooth. A first gripping assembly is detachably mounted on the first swing block, and a second gripping assembly is detachably mounted on the second swing block. This utility model effectively simplifies its structure, reduces its required space, and facilitates easy cleaning of the gripper assembly.

Description

Technical Field

[0001] This utility model relates to packaging equipment, specifically to a rotary clamping mechanism for a bag packaging machine. Background Technology

[0002] A bag-packing machine is a device used to fill packaging bags with materials, and then vacuum and heat-seal them after filling. The rotary clamping mechanism receives and holds empty packaging bags, transferring them to the opening, filling, and heat-sealing stations for processing. Traditional rotary clamping mechanisms typically consist of two swing arms with gripper assemblies inside to clamp the bags and release or straighten the bag opening. Both the swing arms and gripper assemblies require drive components. In practice, material tends to adhere to the gripper assemblies during filling, necessitating cleaning. This requires disassembling the entire swing arm and drive assembly for cleaning and reassembly, a cumbersome process. Furthermore, the drive assembly of the swing arm is complex and requires significant space, making it inconvenient for production assembly and deployment. Utility Model Content

[0003] In view of the deficiencies in the prior art, the technical problem to be solved by this utility model is to provide a rotary clamping mechanism for a bag-packing machine to solve the above-mentioned problems.

[0004] Therefore, this utility model is implemented using the following solution:

[0005] A rotary clamping mechanism for a bag packaging machine includes a rotary table, on which a gripper assembly is arranged circumferentially. The gripper assembly includes a first swing block and a second swing block, with a swing drive assembly and an elastic reset member corresponding to the second swing block. The first swing block is provided with a first transmission tooth, and the second swing block is provided with a second transmission tooth that meshes with the first transmission tooth. A first clamping assembly is detachably mounted on the first swing block, and a second clamping assembly is detachably mounted on the second swing block.

[0006] The top surface of the second swing block is provided with a transmission arm, and the turntable is provided with a first clearance groove for the transmission arm to pass through. The elastic reset member is a first spring, one end of which is connected to the transmission arm and the other end is connected to the turntable.

[0007] The swing drive assembly includes an annular ring with a variable top height. The second swing block is hinged to one end of the first transmission arm, and the other end of the first transmission arm is connected to the swing plate. A support shaft is provided on the turntable to support the swing plate. One end of the swing plate is pressed tightly against the top surface of the annular ring.

[0008] The swing plate is equipped with rollers, which are pressed tightly against the top surface of the annular ring.

[0009] The first clamping assembly includes a gripper cylinder, which is detachably connected to a first swing block. A telescopic rod is provided inside the gripper cylinder, and a second spring is provided corresponding to the telescopic rod. A transmission part is provided extending from the outer wall of the telescopic rod. A second clearance groove is provided on the gripper cylinder for the transmission part to pass through. A pressure plate is provided corresponding to the transmission part. A movable drive assembly can drive the pressure plate to move and squeeze the transmission part to move. A rear gripper is fixedly provided on the gripper cylinder, and a front gripper is provided corresponding to the rear gripper. The front gripper is hinged to the gripper cylinder, and the telescopic rod is hinged to the front gripper.

[0010] The rotary clamping mechanism of the bag packaging machine described above simplifies its structure and reduces its required space by improving the structure of the swing block, distributing the drive structure at both ends of the turntable. The gripper assembly is detachably connected to the swing block; when cleaning the gripper assembly is required, only the gripper assembly needs to be removed, without disassembling the entire swing block structure, effectively simplifying disassembly and assembly operations and improving the user experience. Attached Figure Description

[0011] The present invention includes the following figures:

[0012] Figure 1 This is a schematic diagram of the structure of the turntable in this utility model;

[0013] Figure 2 for Figure 1 A magnified view of the area pointed to by A in the middle;

[0014] Figure 3 for Figure 1 A view from the bottom;

[0015] Figure 4 for Figure 3 A magnified view of the area pointed to by B in the middle;

[0016] Figure 5 This is a schematic diagram of the structure of this utility model;

[0017] Figure 6 This is a cross-sectional view of the present invention;

[0018] Figure 7 for Figure 6 A magnified view of the area where C points. Detailed Implementation

[0019] As shown in the figure, the rotary clamping mechanism of the bag packaging machine disclosed in this utility model includes a rotary table 1. A gripper assembly is arranged around the rotary table 1. The gripper assembly includes a first swing block 6 and a second swing block 7. A swing drive assembly and an elastic reset member are arranged corresponding to the second swing block 7. A first transmission tooth 11 is provided on the first swing block 6, and a second transmission tooth 12 that meshes with the first transmission tooth 11 is provided on the second swing block 7. A first clamping assembly is detachably provided on the first swing block 6, and a second clamping assembly is detachably provided on the second swing block 7.

[0020] Furthermore, a transmission arm 3 is provided on the top surface of the second swing block 7, and a first clearance groove 4 is provided on the turntable 1 for the transmission arm 3 to pass through. The elastic reset component is a first spring 2, one end of which is connected to the transmission arm 3 and the other end is connected to the turntable 1. By adopting this elastic reset structure, the spring and transmission arm structure are integrated into the internal position of the turntable 1, effectively reducing its volume and facilitating its installation within the equipment.

[0021] Furthermore, the swing drive assembly includes an annular ring 17 with a variable top height. The second swing block 7 is hinged to one end of the first transmission arm 14, and the other end of the first transmission arm 14 is connected to a swing plate 15. A support shaft 16 is provided on the turntable 1 to support the swing plate 15. One end of the swing plate 15 is pressed tightly against the top surface of the annular ring 17. A roller 13 is provided on the swing plate 15, pressing tightly against the top surface of the annular ring 17. With this structure, as the turntable 1 rotates, the roller 13 moves on the annular ring 17. The different heights of the annular ring 17 cause the roller 13 to rise and fall, thereby driving the swing plate 15 to swing, which in turn drives the second swing block 7 to swing. Through transmission gears, the first swing block 6 also swings, thus adjusting the relative positions of the first and second clamping assemblies. This facilitates bag opening and filling or flattening the bag opening for heat sealing.

[0022] Furthermore, the first clamping assembly includes a gripper cylinder 5, which is detachably connected to the first swing block 6. A telescopic rod 9 is provided inside the gripper cylinder 5, and a second spring 18 is provided corresponding to the telescopic rod 9. A transmission part 20 is provided extending from the outer side wall of the telescopic rod 9. The second spring 18 is pressed tightly between the gripper cylinder 5 and the transmission part 20. A second clearance groove 19 is provided on the gripper cylinder 5 for the transmission part 20 to pass through. A pressure plate 21 is provided corresponding to the transmission part 20. A movable drive assembly can drive the pressure plate 21 to move and squeeze the transmission part 20 to move. The movable drive assembly can be a cylinder that drives the pressure plate 21 to move through a linkage mechanism. A rear gripper 8 is fixedly provided on the gripper cylinder 5, and a front gripper 10 is provided corresponding to the rear gripper 8. The front gripper 10 is hinged to the gripper cylinder 5, and the telescopic rod 9 is hinged to the front gripper 10. By employing the above structure, when the pressure plate 21 is not pressing the transmission part 20, the second spring 18 presses the transmission part 20, causing the telescopic rod 9 to move inward, so that the front gripper 10 and the rear gripper 8 are in a cooperating clamping state. When the pressure plate 21 moves to press the transmission part 20, it will press the second spring 18 and cause the telescopic rod 9 to move outward, causing the front gripper 10 to swing, so that the front and rear grippers release the packaging bag. The structure of the second clamping assembly is the same as that of the first clamping assembly, so it will not be described in detail again.

[0023] The working principle of this utility model is as follows: Turntable 1 first drives the gripper assembly to rotate to the bag clamping station. At this time, the pressure plate 21 squeezes the transmission part 20 to open the front and rear grippers. When the bag opening is inserted between the front and rear grippers, the pressure plate 21 returns to its original position. The second spring 18 drives the front gripper 10 to move and clamp the bag. Then, turntable 1 drives the bag to rotate to the bag opening station. At this time, the annular ring 17 drives the roller 13 to move, which drives the swing plate 15 to swing, which drives the second swing block 7 to swing. Through the transmission gear, the first swing block 6 also swings, which reduces the distance between the first and second clamping components, making it easier to open the bag. Then, turntable 1 drives the bag to the feeding station for feeding. After feeding, turntable 1 drives the bag to the heat sealing station. During this process, the annular ring 17 drives the roller 13 to move, which drives the first and second swing blocks to swing, which increases the distance between the first and second clamping components and flattens the bag opening for heat sealing.

[0024] This invention, through an improvement on the structure of the swing block, distributes its drive structure at both the upper and lower ends of the turntable, effectively simplifying the structure and reducing its required space. The gripper assembly is detachably connected to the swing block; when cleaning the gripper assembly is required, only the gripper assembly needs to be removed, without disassembling the entire swing block structure, effectively simplifying disassembly and assembly operations and improving the user experience.

Claims

1. A rotary clamping mechanism for a bag packaging machine, comprising a rotary table (1), wherein gripper assemblies are arranged circumferentially on the rotary table (1), characterized in that: The gripper assembly includes a first swing block (6) and a second swing block (7). A swing drive assembly and an elastic reset member are provided on the second swing block (7). A first transmission tooth (11) is provided on the first swing block (6), and a second transmission tooth (12) that meshes with the first transmission tooth (11) is provided on the second swing block (7). A first clamping assembly is detachably provided on the first swing block (6), and a second clamping assembly is detachably provided on the second swing block (7).

2. The rotary clamping mechanism of the bag packaging machine according to claim 1, characterized in that: The top surface of the second swing block (7) is provided with a transmission arm (3), and the turntable (1) is provided with a first clearance groove (4) for the transmission arm (3) to pass through. The elastic reset member is a first spring (2), one end of the first spring (2) is connected to the transmission arm (3), and the other end is connected to the turntable (1).

3. The rotary clamping mechanism of the bag packaging machine according to claim 1, characterized in that: The swing drive assembly includes an annular ring (17) with a variable top height. The second swing block (7) is hinged to one end of the first transmission arm (14), and the other end of the first transmission arm (14) is connected to the swing plate (15). A support shaft (16) is provided on the turntable (1) to swing the swing plate (15). One end of the swing plate (15) is pressed tightly against the top surface of the annular ring (17).

4. The rotary clamping mechanism of the bag packaging machine according to claim 3, characterized in that: The swing plate (15) is provided with rollers (13), which are pressed tightly against the top surface of the annular ring (17).

5. The rotary clamping mechanism of the bag packaging machine according to claim 1, characterized in that: The first clamping assembly includes a clamping cylinder (5), which is detachably connected to the first swing block (6). A telescopic rod (9) is provided inside the clamping cylinder (5), and a second spring (18) is provided corresponding to the telescopic rod (9). A transmission part (20) is provided extending from the outer side wall of the telescopic rod (9). A second clearance groove (19) is provided on the clamping cylinder (5) for the transmission part (20) to pass through. A pressure plate (21) is provided corresponding to the transmission part (20). The movable drive assembly can drive the pressure plate (21) to move and squeeze the transmission part (20) to move. A rear clamping jaw (8) is fixedly provided on the clamping cylinder (5), and a front clamping jaw (10) is provided corresponding to the rear clamping jaw (8). The front clamping jaw (10) is hinged to the clamping cylinder (5), and the telescopic rod (9) is hinged to the front clamping jaw (10).

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